急求各位英语高手帮我解答下这几句英语 我现在正在学新概念第二册，43课有一句有一句不明白现在请教下大家。In1929，threeyearsafterhisflightovertheNorthPole，。
for the first time 和 at the first time 有什么区别 for the first time是一个表时间的介词短语，在句子中做时间状语，常用于完成时.如：I've been here for the first time.我是第一次来这里.at the first time 是介词短语，是“在第一次”He won the match at the first time.他在第一次比赛中就获胜了.
In 1929，three years after his flight over the North Pole，the American explorer，R.E Byrd，successfully flew over the South pole for the first time.
